An investigation of interoperability issues between authorisation systems within web services

The existing authorisation systems within the context of Web Services mainly apply two access control approaches – Role-Based Access Control (RBAC) and Attribute-Based Access Control (ABAC). The RBAC approach links an authenticated Web Service Requester to its specific access control permission through roles, but RBAC is not flexible enough to cater for some cases where extra attribute information is needed in addition to the identity. By contrast, the ABAC approach has more flexibility, as it allows a Web Service Requester to submit necessary credentials containing extra attribute information that can fulfil the policies declared by a Web Service Provider, which aims to protect the sensitive resources/services.RBAC and ABAC can only help to establish a unilateral trust relationship between two Web Services to enable a Web Service Provider to make an access control decision. Unfortunately, the nature of Web Services presents a high probability that two Web Services may not know each other. Therefore, successful authorisation may fail, if the Web Service Requester does not trust the Web Service Provider.Trust Negotiation (TN) is also an access control approach, which can provide a bilateral trust relationship between two unknown entities, so it sometimes can enable authorisation success in situations where success is not possible through RBAC or ABAC approaches. However, interoperability issues will arise between authorisation systems within Web Services, where a bilateral trust-based authorisation solution is applied. In addition, a lack of a unified approach that can address the interoperability issues remains as a research problem. This research aims to explore possible factors causing the lack of interoperability first, and then to explore an approach that can address the interoperability issues. The main contributions of this research are an improved interoperability model illustrating interoperability issues at different layers of abstraction, and a novel interoperability-solution design along with an improved TN protocol as an example of utilising this design to provide interoperability between authorisation systems within Web Services

The Development of a bi-level geographic information systems (GIS) database model for informal settlement upgrading

Bibliography : leaves 348-369.Existing Urban GIS models are faced with several limitations. Firstly, these models tend to be single-scale in nature. They are usually designed to operate at either metropolitan- or at the local-level. Secondly, they are generally designed to cater only for the needs of the formal and environmental sectors of the city system. These models do not cater for the "gaps" of data that exist in digital cadastres throughout the world. In the developed countries, these gaps correspond to areas of physical decay or economic decline. In the developing countries, they correspond to informal settlement areas. In this thesis, a new two-scale urban GIS database model, termed the "Bi-Ievel model" is proposed. This model has been specifically designed to address these gaps in the digital cadastre. Furthermore, the model addresses the short-comings facing current informal settlement upgrading models by providing mechanisms for community participation, project management, creating linkages to formal and environmental sectoral models, and for co-ordinating initiatives at a global-level. The Bi-Ievel model is comprised of a metropolitan-level and a series of local-level database components. These components are inter-linked through bi-directional database warehouse connections. While the model requires Internet-connectivity to achieve its full potential across a metropolitan region, it recognises the need for community participation-based methods at a local-level. Members of the community are actually involved in capturing and entering informal settlement data into the local-level database

Machara and Kodori Valleys (historical Apsilia) of NW Georgia in Caucasia in the 1st to 7th centuries AD

The dissertation concerns the historical Apsilia and offers a new theoretical approach to the nature of Apsilian material culture, which covers the period from the 1st to the early 7th centuries. Reasons are reflected in critical evaluation of the past scholarly contribution, where all problems have been analyzed. Three studies are conducted in this thesis that moves over two historical timescale Roman and early medieval periods. The author aims for her achievements and presents a background for new arguments and theories. First is a descriptive-analytical study of cremated minorities of Olginskoe cemetery. This attempts to reveal the full potential of acts, changes, and the purpose of individual choices, leading to distinctive practices and diversifying grave structures. They are patterns rarely considered in past studies of burial customs and drawing on this author’s new research, vision and imaginations. It sets out a new approach to the regional context of cremated minorities. New typo-chronology and relevant content of applied specifics (some are resistant to local origin) attempt to reconcile the components of the cultural definition (‘Tsebeldian culture’) of Apsilian material culture. They are unique components and a new context of hypothesis which can be tested in archaeological evidence. The other two issues derive from past scholarly contributions concerning the potential, perspectives, and functions of the geo-strategically significant NW region-Apsilia within Colchis/Lazica. It seeks to provide a broader understanding of the evolution of late Roman and early Byzantine Apsilian sites. This is a new approach to the study, which makes accessible the introduction of time-relative pieces of evidence and attempts to encompass existing knowledge about the studied material, but with a different perspective. It explores the possibility of new narratives by investigating broad features of trade and regional militarization that led to a global political establishment in Apsilia

2018, UMaine News Press Releases

This is a catalog of press releases put out by the University of Maine Division of Marketing and Communications between March 2, 2018 and December 31, 2018

Maintenance of Relationship Functioning For ePREP and OurRelationship for Low-income Couples

Symposium Title: Relationship Health Across Diverse and Underserved Communities: Connecting Theory and Practice to Inform Therapeutic Processes for Couple Distress Chairs: Judith Biesen, M.A., University of Notre Dame; Binghuang A. Wang, M.S., Binghamton University, State University of New York Discussant: Emily Georgia Salivar, Ph.D., Nova Southeastern Universit

Become an American Board of Professional Psychology (ABPP) Board Certified Specialist in Behavioral and Cognitive Psychology

This workshop will focus on how to become a Board Certified Specialist in Behavioral and Cognitive Psychology. Certification by ABPP demonstrates psychologists have met their specialty’s standards and competencies. Board Certification is valuable for several reasons: (a) it is increasingly becoming an expectation in our profession; (b) it enhances practitioner credibility for patients; (c) it distinguishes you from other psychologists; (d) there are potential salary increases by the VA, hospitals, the military, and other health care facilities; (e) it enhances qualifications as an expert witness; (f) it facilitates inter-jurisdictional licensing and practice mobility; and (g) it streamlines the credentialing process for licensing boards, and insurance companies. The application process for regular, early entry (graduate students, interns, and residents), and senior option candidates will be reviewed

Relationship Health Across Diverse and Underserved Communities: Connecting Theory and Practice to Inform Therapeutic Processes for Couple Distress

Symposium Chairs: Judith Biesen, M.A., University of Notre Dame Binghuang A. Wang, M.S., Binghamton University, State University of New Yor